I knew exactly what you were hinting at getbent, cause this hull is meant to go offshore. We replaced the tank with an 80 gallon plastic one.
The only fatal flaw to these boats were the fiberglass fuel tanks they put in them. Fiberglass and gasoline don't get along, so we pulled the tank and replaced it and we also installed the better fuel sender that's a donut on a stick, way better than the floppy float arms that standard tanks come with.
The factory fuel tank was an engineering marvel though, it looked like it belonged in an old spitfire fighter plane, the fuel sender plates were full of a dozen fine thread bolts with airplane wiring for each head.